该文报道了采自中国大兴安岭的罗西藻属(Rossthidium)等3属7种中国新记录硅藻。分别为皮氏罗西藻(Rossithidium petersennii),喜酸沙生藻(Psammothidium acidoclinatum),格劳宾登沙生藻(Psammothidium grischunum),近原子形沙生藻(Psammothidium subatomoides),腹面沙生藻(Psammothidium ventralis),显著片状藻(Platessa conspicua)和卢瑟片状藻(Platessa lutheri),并对罗西藻属的形态特征及其各种类的形态分类特征进行了详细的描述,给出了各种类的生态分布特点。
Seven newly recorded species of Achnanthidiaceae from Great Xing’an Mountains were reported in this paper. They are Rossithidium petersennii, Psammothidium acidoclinatum,Psammothidium grischunum,Psammothidium subatomoides, Psammothidium ventralis, Platessa conspicua,Platessa lutheri. Morphological features of these species were described in detail and the habitats of sampling sites were given. The Chinese description of the genus Rossithidium is provided.